Trinity Biotech Launches $4,352,314 At-The-Market ADS Offering Through Lucid Capital

We have entered into an At the Market Offering Agreement (the "ATM Sales Agreement"), with Lucid Capital Markets, LLC ("Lucid") relating to the sale of our American Depositary Shares ("ADSs") representing our A Ordinary Shares, par value $0.0001 per share ("Ordinary Shares") (each ADS represents 20 Ordinary Shares), offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of such ATM Sales Agreement, we may offer and sell our ADSs representing Ordinary Shares having an aggregate offering price of up to $4,352,314 from time to time through or to Lucid acting as our sales agent or principal.

Our ADSs are listed for trading on the Nasdaq Global Select Market ("Nasdaq") under the symbol "TRIB." On June 11, 2026, the closing price of an ADS on Nasdaq was $0.6751.

Sales of our ADSs, if any, under this prospectus supplement and the accompanying prospectus will be made in sales deemed to be an "at the market offering" as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended (the Securities Act). Lucid is not required to sell any specific amount of securities but will act as our sales agent using commercially reasonable efforts consistent with its normal trading and sales practices, on mutually agreed terms between Lucid and us. There is no arrangement for funds to be received in any escrow, trust or similar arrangement.

The compensation to Lucid for sales of ADSs sold pursuant to the ATM Sales Agreement will be 3.0% of the gross proceeds of any ADSs sold under the ATM Sales Agreement. In connection with the sale of the ADSs on our behalf, Lucid will be deemed to be an "underwriter" within the meaning of the Securities Act and the compensation of Lucid will be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution to Lucid with respect to certain liabilities, including liabilities under the Securities Act or the Securities Exchange Act of 1934, as amended (the Exchange Act).